A Population with a Mean of 1,250 and a Standard

question 31

Multiple Choice

A population with a mean of 1,250 and a standard deviation of 400 is known to be highly skewed to the right. If a random sample of 64 items is selected from the population, what is the probability that the sample mean will be less than 1,325?

• A) 0.8981
• B) 0.8141
• C) 0.7141
• D) 0.9332

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Definitions:

Self-report Measure

A type of psychological assessment where individuals provide evaluative information about themselves, often in the form of questionnaires.

Unconscious Motivations

Drives and desires operating below the level of conscious awareness, influencing behavior and decision-making.

Serotonin

A neurotransmitter that plays a key role in regulating mood, appetite, and sleep among other functions.

Pessimistic Attitude

A tendency to focus on the negatives of a situation or to expect the worst possible outcome.